Welcome aboard Lunar (as in the film Moon?).
Your project is going to be challenging for sure. The buildings were not, to my knowledge used for the movie...but the columns supporting most of the ones you selected were used.

Left columns seems to be the one you see on the roof were Batty dies.
Right ones seems to be the one supporting the overhang of the Bradbury.
The back ground ones (you didn't select those) are seen in the street/market shots.
Cars seems to match the ones used in the street scenes also (Deck's sedan and the other on the right in the background of the first building.

What you're seeing before the street junction unit is a garbage can (you can see those when Priss is waiting for Sebastian.

I'm sure others will chime in...good luck with the project and don't forget to post pics

Very likely the buildings are based on the layout of the Warner Brothers New York street set that was customized or "Retrofitted" for the film based on Syd's paintings. I think Syd had used the set, or photos of, at that point as the basis and worked on ways of making it futuristic. So it might match up pretty well at that point. The columns used in front of the Bradbury were first used here, and were moved all over to change up the set, as were the ones used on the roof of the Bradbury and in front of Leon's apartment.

The cars were also Syd's designs, and are Deckard's Sedan/police sedan, and the compact "rental" cars that people could just use as needed, and were not personal cars. There are photos of them on the web and on bladezone.